martin_s@xxxxxxx (martin_s@xxxxxxx): > I want to build a videosurveilance system with linux. I wondered why > the resulting images are so bad. > > I use high res pal cams with 752x582 pixels but the captured image is > very bad. it looks like a streched image of about 340x200. > > I found out that bttv delivers only the even frames of the pal signal. > > Can i change this to get a full quality picture ? How are you capturing and displaying the images? The bttv driver will give you the full quality of the original signal. One thing you can do is test with my 'tvtime' application. It has many modes to allow you to set it up for viewing your content optimally. For example, if your camera provides progressive frames, bottom or top field first, you can set up tvtime to view them as such. See: http://tvtime.sourceforge.net/ -Billy
